Spraying machine



R. ATZ

' sPRAYING MACHINE' Filed Jan 15', 1925 4 2 sheets-sheet 1 July 6 1926. 1,591,693

. R. ATZ

SPRAYING MACHINE 4 wz y Patented July 6, 1926.

UNITED STATES ROBERT ATZ, OF DENVER, COLORADO.

SPRAYING MACHINE.

Application led January 15,` 1925. Serial No. 2,669.

This invention relates to machines for spraying insect destroying solutions onto shade, fruit, and other trees, hedges, bushes to improve and simplify the general construction .of machines of this kind and to provide one'adapted to be operated by pressure fluid suoli for instance as water takenfi'om the domestic or any other suitable source of supply.

With the above and other objects in view, the invention consists of the construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawings, wherein:

Figure 1 is a sectional view taken on `a vertical plane extending centrally and longitudinally through a spraying machine constructed in accordance with my invention,

Figure 2 is a sectional view taken on a vertical plane extending centrally transversely through the machine,

Figure 3 is a detail sectional view taken on the horizontal plane indicated by the line 3-3 of Figure 1, and

Figure 4 is a detail sectional view taken on the plane indicated by the line 4-4 of Figure 1.

The machine is mounted upon a wheeled truck so that it may be readily moved from place to place, and this truck comprises ground wheels 1 mounted upon axles 2. A

front frame member 8 and a rear frame member 4 are mounted upon the axles 2, and are supported in upright position thereon by lower and upper longitudinal beams 5 and 6. A handle 7, a part only of which is shown, is pivotally connected to the front frame 3 asat 8.

`A front cylinder 9 and rear cylinder 10, which are arranged in endwise relation and which extend longitudinallyl of the truck, are secured to the upper ends of the fra-me members 3 and 4C in any suitable manner. The cylinders 9 and 10 are similar, and each is provided with an outer flanged head 11 and aninner flanged head 12. Bolts 13 passing through the flanges of the inner heads 12 secure the cylinders 9 and 10 against relative axial and rotary movements. rlhe cylinders 9 and 10 are provided with pistons 14 and 15, respectively, which are connected by a rod 16 for simultaneous forward, backward movements. The rod 16 passes through an opening 17 in the cylinand Y der heads 1.2, and this opening is provided with a packing to prevent leakageabout the I Vrod 16.` Adjacent their inner ends, the and the like, and has for one of its objects cylinders 9 and 10 are connected to a storage tank 19 by means of a manifold 2O and a pipe 21 and to a hose 22 by means of a manifold 23 andapipe 24. The-manifold 26A'is located at one side of the cylinders 9 and 104 and provided with inwardly opening check valves 20a. The manifold 23 is located at the other side of the cylinders 9 and 10 and is provided with outwardly opening check valves 23a. The hose 22 is provided with a suitable nozzle, not shown. Motion is' imparted to the pistons 111 andfl by pressure fluid alternately admitted to the cylindeis 9 and at the outer endsthereof. During the travel of the pistons 1a and 15 in each direction spray solution is drawn from the tank 19 into one of the cylindersthrough the manifold and pipe 21, while the spray solution in the other cylinder is forced there-v from to the hose 22 through'the manifold 23' and pipe 211. lt will thus be seen that whenl one piston is drawing the 'spray solution into its cylinderv the other piston is discl'iarging the spray solution from its cylinder, and due thereto a constant stream of spray soli'i tion will be passing through the hose 22 during the operation of the engine.

The cylinders 9 and 1() are each provided with an inlet valve 25. These valves coni'- 26 are fully open at their innerends and closed at their outer ends by removable plugs 27. Adjacent their inner ends, the casings 26 arefprovided with seats 28 forvalves 29 and with intake'openings 30 which comL municate with the discharge ends of a pressure luidinlet manifold 31. A hose 32 which may bev connected at one end to a faucet of a domestic water supply system, or to any other suitable source of water under pressure, is connected at its other end tothe intake side of avalve 33. The discharge side of the valve 33 is connected to the manifold 31, and this valve provides means by which the flow of pressure fluid to the cylinders 9 and 10 may be regulated and controlled. The valves 29 when seated cut off communication between the cylinders and the manifold 31, and when unseated communication between the cylinder and inanifold is established. The valves 29 are slidably mounted in the casings`26 and have `pipes 37, carry the valves 41'.

fixed thereto stems. 34 which project'beyond the inner and outer ends of thef'cas-ingsQG. At their outer ends, the stems 34 are pro.- vided with bifurcated heads 35 and coil springs 36 are mounted upon the stems between the plugs 27 and said heads.

Each of the cylinders 9 and 10 is also provided with an exhaust pipe 37. These exhaust pipes have threaded engagement with thev cylinder heads-11, and are fully open at their inner ends` andv closed at. their outer ends by removable plugs 38'.v The exhaust pipes 37'v are provided: with. exhaust ports 39, and are provided .at their inner endsa with seats=40f` for valves 41.. Stems42, which are. slidably mounted in the plugs 38 and in brackets 43' arranged Within the exhaust The outer ends: ofl the stems 42 are provided with enlarged bifurcated heads 44. Coil springs 45' are mounted upon the stems 42 between theplugs 38 and the heads The. valves 4l# vvhen4 seated cut oli communication be'- tw'een the cylinders and exhaust ports 39' and When unseatedv com'i'n-unicationr between the' exhaust cylinders and exhaust ports is established.

bar'46 isfmounted upon and' fixed:v to the cylinder heads Il and? 12.k The ends of this b'arproject beyond the outer ends oi the casings 26 and the exhaust pipes 37., Levers 47 are pivote'd intermediate' their ends to the ends'of' the bary 46. The levers 47 are vertically arranged, and. are connected belonrv their pivots: 48*r With the heads 35l of the stems S4 and the heads 44 of the stems 42. Above` their pivots-48, theleversi4'Z are connect'ed.' by a rod 49-Which consists of sections 50 pivotally connected at` their outer ends as at 51= tothe levers 4Z andi connected at their innerends: by a turn buckle 52; Due

to the.` manner in whichy the stems 34 and 42:

` ofthe' respectivev cylinders-are connectedby the' respectiveV levers 47, an inlet valve' 29' ivi-111 beY seatedy when its companion outlet valve-41 is unse-ated,- andunseated when its' companion outlet valve is seated.` Due tof the maenner in. Which-1 the levers: 47 are connected,-the inlet valve 29'and outlet valve 41 of one cylinder Will be respectively seated: and unseated when' the inlet valve 29r and outlet valve 41 ot the' other cylinder will be'V respectively unseat-ted. and' seated.

The pistons 14 and 15.1 are adapted during theirtravel to contact withY the inner ends or' the stems.v 34, with the result that the, valves are actuated in: a manner to alternatel'y connect therespective cylinders with theint'ake manifold Sli andthe atmosphere'. The valves are adapted to be maintained against' casual movement in the positions into' which they have been moved as the result of' theactuation? thereof by thel pistons 154' and I5 by means of a counter-balanced le'veri'` 'Ihis lever is arranged ver'- ticallyv and is pivoted at its lower end to the cylinder flanges l2 as at 54. The upper end of the lever is provided with a Weight 55, and it is connected to the rod 49 by springs 56.

From. the foregoing description, taken in connection with the accompanying drawings, the advantages of the construction and of the method oi operation of the device should be readily apparent to. those skilled in the art to which it a-ppertains. lVhile l have described the principle of operation of the invention, together with the device which I nonv consider to be the best embodiment. thereof, l? desire to have it understood that the device sho-Wn is merely illustrative and that suchcha-nges may be made therein when Vdesired as arewvithin the scope of the inven der, a rod connectingthepistons, and means at the outer ends of the cylinders for controlling the admission or" pressure fluid to and its escape from thecylinders, each of said means including an inlet and an exhaust valve, a lever connected to each of the valves` of each of said means, and operating means connecting the levers.

2. A spraying machine comprising a tank,

a pair of cylinders arranged in endWise relation, means establishing communication between the inner ends of the cylinders and tank independently of the meeting ends of the cylinders, a discharge pipe, means establishingI communication between the inner' ends ofthe cylinders and the discharge pipe and intake and exhaust valves located atv the outer end of each cylinder, means connecting the valves` of each cylinder, and means connecting the valves of both cylinders.

3. A spraying machine comprising a tank, a pair of cylinders arranged in endivise rel:ation means establishing communication between the inner ends of the cylinders and the tank, a discharge pipe, means establislr ing lcommunica-tion between the inner ends of the cylinders and the discharge pipe, a piston actuated intake and exhaust valve at the outer end olE eachcylinder, levers connecting the valves oli each cylinder, means connecting the levers, and means connected to the last named means and adapted to normally hold the valves against movement.

4. A spraying machine comprising a tank, cylinders arranged in Lendwise relation, means establishing communication between the inner ends of the cylinders and the tank, a discharge pipe, means establishing communication between the inner ends of the cylinders and the discharge pipe, a piston actuated intake and exhaust valve at the outer end of each cylinder, the outer ends of said cylinders and the inner ends of said cylinders being outwardly flanged, a bar secured to the flanges, levers pivoted to the ends of said bar, valves of the/ respective cylinders being pivoted to the respective levers, an operating lever pivoted to the cylinders adjacent their junction, and resilient means extending from the operating lever to the first mentioned levers.

In testimony whereof I affix my signature.

ROBERT ATZ. 

